Obi

Most popular questions and responses by Obi
  1. Statistics

    A number of people were asked how many days they would wait to seek medical treatment if they were suffering pain that interfered with their ability to work. The results are presented in the following table. Number of days: 0 , 1 , 2 , 3 , 4 , 5 Frequency:

    asked on October 1, 2015
  2. Statistics

    An investor is considering an investment in a start-up company. she estimates that she has probability 0.25 of a $ 39,739 loss, probability 0.20 of a $ 19,759 profit, probability 0.15 of a $ 49,068 profit, and probability 0.40 of breaking even (a profit of

    asked on October 1, 2015
  3. Statistics

    The probability of winning something on a single play at a slot machine is 0.29. After 6 plays on the slot machine, What is the probability of winning at least once? Write only a number as your answer. Round your answer to four decimal places (for example:

    asked on October 1, 2015
  4. Statistics

    The probability that a student uses Smarthinking online tutoring on a regular basis is 0.41. In a group of 21 students, what is the probability that exactly 5 of them use Smarthinking Online Tutoring on a regular basis? Write only a number as your answer.

    asked on October 1, 2015
  5. Statistics

    In a certain class 27% of the students are left-handed. suppose that a random sample of 53 students is selected. Find the mean number of left-handed students in the class. Round your answer to the nearest integer.

    asked on October 1, 2015
  6. Statistics

    At a local university, when scheduling classes, the probability that there are no evening classes available on a certain day is 0.80. what is that probability that there is at least one evening class available on that day? Write one a number as your

    asked on October 1, 2015
  7. Statistics

    Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 babies is selected. What is the probability that the average weight of the sample is less than

    asked on October 14, 2015
  8. Statistics

    The Probability that a randomly selected commuter listens to audiobooks during their commute is 0.49. Suppose that a sample of 10 commuters is selected, what is the probability that at most 3 of them listen to audiobooks? Write only a number as your

    asked on October 1, 2015
  9. Statistics

    A group of freshmen and sophomore students was selected and each was asked whether they were a member of a student club. The following table was constructed: Student Club No Student Club Freshman 4 15 Sophomore 9 7 Find the probability that a randomly

    asked on October 1, 2015
  10. Statistics

    At a certain university, 50% of all entering freshmen planned to major in a STEM (science, technology, engineering, mathematics) discipline. A sample of 36 freshmen is selected. What is the probability that the proportion of freshmen in the sample is

    asked on October 18, 2015
  11. Statistics

    According to one pollster, 48% of people are afraid of flying. Suppose that a sample of size 20 is drawn. Find the value of standard error , the standard deviation of the distribution of sample proportions. Write only a number as your answer. Round to two

    asked on October 18, 2015
  12. Statistics

    Types of bonds are divided into three categories: good risk, medium risk, and poor risk. Assume that of a total of 13,838 bonds, 7,035 are good risk, 1,388 are medium risk, and the rest are poor risk. One bond is chosen risk? Write only a number as your

    asked on October 1, 2015
  13. Statistics

    The z-scores that bound the middle 35 % under the standard normal curve are z = -a and z = a. Find the value of a. Write only a positive number as your answer. Round to two decimal places (for example: 0.81).

    asked on October 13, 2015
  14. Statistics

    74% of freshmen entering public high schools in 2006 graduated with their class in 2010. A random sample of 81 freshmen is selected. Find the probability that the proportion of students who graduated is greater than 0.750 . Write only a number as your

    asked on October 18, 2015
  15. Statistics

    It has been reported that 48% of teenagers play video games on their phones. A random sample of 60 teenages is drawn. Find the probability that the proportion of teenagers in the sample who play videos games on their phone is less than 0.499 . Write only a

    asked on October 18, 2015
  16. chemistry

    consider the reaction in which 410g of Ca(NO3)2 react with just the right amount of lithium metal in a single replacement reaction ?

    asked on December 4, 2010
  17. Statistics

    Find the z-score for which the area to its right is 0.65 . Write only a number as your answer. Round to two decimal places (for example: 0.81).

    asked on October 13, 2015
  18. Statistics

    At a car rental agency, 0.34 of the cars are returned on time. A sample of 13 car rentals is studied. What is the probability that more than 3 of them are returned on time? Write only a number as your answer. Round to 2 decimal places ( for example: 0.24).

    asked on October 1, 2015
  19. Statistics

    At a certain concert, 43% of the audience was under 20 years old. A random sample of n = 181 members of the audience was selected. Find the value of sample mean, the mean of the distribution of sample proportions. Write only a number as your answer. Do not

    asked on October 18, 2015
  20. Statistics

    Find the z-score for which the area to its left is 0.46 . Write only a number as your answer. Round to two decimal places (for example: 0.81).

    asked on October 13, 2015
  21. sports management

    In a couple of paragraphs explain what you know on management and leadership?

    asked on August 22, 2016
  22. Statistics

    Find z 0.44 . Write only a number as your answer. Round to two decimal places (for example: 0.81).

    asked on October 13, 2015
  1. English

    I want write a speech as a head girl write a sentforth speech to your out-going principal please I need help

    posted on June 14, 2017
  2. physics

    convex and divergent

    posted on June 5, 2016
  3. Statistics

    i just need to know how to do it

    posted on October 18, 2015
  4. Statistics

    no i just need help knowing to go about it!

    posted on October 1, 2015
  5. phy

    yes

    posted on October 16, 2013